Category: Physics

Which best describes reflection and refraction in both reflection and refraction? In both reflection and refraction, rays bounce off a boundary. In reflection, rays bounce off a boundary, and in refraction, rays pass through a boundary. In refraction, rays bounce off a boundary, and in reflection, rays pass through a boundary. Why is refraction called […]

Which list goes from smallest to largest? The levels, from smallest to largest, are: molecule, cell, tissue, organ, organ system, organism, population, community, ecosystem, biosphere. What are the six levels of organization? Name the six levels of organization of the human body. Chemical, cellular, tissue, organ, organ system, organism. What is the most complex level […]

Who attends State of the Union? Every member of Congress can bring one guest to the State of the Union address. The president may invite up to 24 guests with the First Lady in her box. The speaker of the House may invite up to 24 guests in the speaker’s box. What does a president […]

What are the five kinematic equations? Building on what you have learned so far and what Galileo presented, we have what my physics teacher, Glenn Glazier, liked to call the Five Sacred Equations of Kinematics for constant acceleration. In these equations, v is velocity, x is position, t is time, and a is acceleration. Remember, […]

How smart is a dog? Dog lovers will often extol the intelligence of their canine counterparts, and not without reason—dogs are indeed pretty smart. Man’s best friend can understand up to 250 words, interpret human emotions, and even pull off crafty tricks when trying to score a snack. Can mice kill elephants? Mice don’t scare […]

What is the difference between linear thermal expansion and volume thermal expansion? B20. What is the difference between linear thermal expansion and volume expansion? Linear thermal expansion defines the fractional increase in length, whereas the volumetric expansion defines the fractional increase in volume per unit rise in temperature. Does concrete expand with heat? Changes in […]

Why do they call it an inning? The term inning in baseball comes from the Old English innung — the gerund form of innian “to get within, put or bring in” — and was originally used in the sense of “a team’s turn in a game” in 1738. Why does baseball have 9 innings? In […]

What is evaporation and examples? Evaporation is defined as the process in which the state of water from liquid to gaseous or to vapour state takes place. The rate of evaporation is dependent on the temperature. As the temperature increases, the evaporation rate increases. The melting of an ice cube is an example of evaporation. […]

What are the effects of force in our daily life? Force can make a moving object to stop and also make a stationary object to move. The magnitude and the direction of the force on the body are important to change the state of motion. There are many factors that influence the state of motion […]

Can the mind exist without the body? It is possible one’s mind might exist without one’s body. One’s mind is a different entity from one’s body. What does Descartes think of the soul? Descartes considered the body and the soul to be ontologically separate but interacting entities, each with its own particular attributes. He then […]